| Category | Year; no. (%) of drugs | |||||
|---|---|---|---|---|---|---|
| 2013* | 2014† | 2015‡ | ||||
| Most-promoted drugs n = 28 | Top-selling drugs n = 30 | Most-promoted drugs n = 29 | Top-selling drugs n = 29 | Most-promoted drugs n = 32 | Top-selling drugs n = 29 | |
| Major therapeutic gain | 0 (0) | 5 (17) | 1 (3) | 4 (14) | 1 (3) | 4 (14) |
| Moderate therapeutic gain | 1 (4) | 2 (7) | 2 (7) | 2 (7) | 2 (6) | 2 (7) |
| Little to no therapeutic gain | 27 (96) | 23 (77) | 26 (90) | 23 (79) | 29 (91) | 23 (79) |
*p = 0.04, Fisher exact test.
†p = 0.4, Fisher exact test.
‡p = 0.4, Fisher exact test.